1. Make the mango dipping sauce: Place mango, shallot, jalapeno, cilantro, lime juice, sugar, and oil in the bowl of a food processor and process until smooth. If sauce is too thick, thin with water, adding 1 tablespoon at a time.

2. Make the croquettes: Heat ghee in a small skillet over medium. Add shallot, bell pepper, and garlic and cook until softened, 2 to 3 minutes. Stir in cumin and season with salt and pepper. Cook for 1 minute more, then let cool to room temperature.

3. Place mashed potato, parsley, cilantro, yogurt, and shallot mixture in a medium bowl. Gently fold to combine using a rubber spatula. Cover and refrigerate for 30 minutes. Fold in crab.

4. In a deep cast-iron skillet, heat oil until a deep-fry thermometer reaches 350 degrees. Place flour, eggs, and panko in three separate shallow dishes. Use a scoop or spoon to form the crab-and-potato mixture into 1 1/2-inch balls. Dredge each ball first in flour, then in egg, and finally in panko, ensuring that each ball is fully coated; shake off any excess.

5. Working in batches, transfer croquettes to hot oil using a slotted spoon or spider, and cook, turning occasionally, until golden brown, 3 to 4 minutes. Transfer to a a paper towel-lined baking sheet; season with salt. Serve croquettes with mango dipping sauce.